How long does hepatitis B vaccine last?

Update Date: 2025-01-15 Source: Network

summary

I was vaccinated when I was at school, but I haven't been vaccinated since I went to work. It's about five or six years. A few days ago, I heard a colleague say that hepatitis B vaccine has a deadline, but it doesn't exist after a long time. I'm afraid that I won't be infected with hepatitis B virus. So, how long is the validity period of hepatitis B vaccine?

How long does hepatitis B vaccine last?

First, the positive conversion rate of hepatitis B surface antibody is more than 95%, and the effective protection period is more than 5 years. The higher the antibody titer is, the stronger the immunity is, and the longer the duration of immune protection is.

Second: but there are also very few people in the hepatitis B vaccine, the body produced anti HBS titer is very low, can not reach the protection value, so it can not effectively prevent hepatitis B virus infection and replication.

Third: the general injection of hepatitis B vaccine antibody, the length of time also varies from person to person, so even if there is hepatitis B surface antibody, but also to review on a regular basis. Found that antibody weakened or disappeared, it is necessary to timely hit a good hepatitis B vaccine.

Fourth: hepatitis B vaccine is not omnipotent, hepatitis B vaccine vaccination will not produce permanent hepatitis B antibody, so you will not be infected with hepatitis B for a lifetime, so you still need to check regularly.

Fifth: the best every 3-5 years to strengthen the injection of a hepatitis B vaccine, before the injection had better check a hepatitis B antibody, if there is an antibody, then only one injection can be, if there is no antibody, then you need the whole immunization, namely three injections.

Sixth: under normal circumstances, hepatitis B vaccine will not affect daily work and life, so you can not worry about so much, as soon as possible to play vaccine to prevent disease.

matters needing attention

All those who have not been infected with hepatitis B virus should be injected with hepatitis B vaccine. The protective antibody produced after injection is not permanent, so the injection must be strengthened under the guidance of doctors.